Title: NEW POLYMERS DERIVED FROM RENEWABLY RESOURCED LYSINOL
Number/Link: US2014/275311
Applicant/Assignee: Du Pont
Publication date: 18-09-2014
“Gist”: Use of lysinol as renewable monomer for nitrogen-containing polymers including polyurea.
Why it is interesting: Lysinol or 2,5-diamino-1-hexanol is an amino alcohol derived from the amino acid lysine by hydrogenation. Lysine itself is produced by fermentation from sugars. Annual production of lysine is apparently in excess of 1 million tonnes and its derivative lysinol is therefore considered as a potentially interesting biorenenawable monomer for a number of nitrogen-containing polymers. This patent application claims lysinol-based polyamides, polyimides, polyureas and “urethane crosslinked” polyureas including foams. In the examples urethane-polyureas are produced by reacting lysinol with hexamethylenediisocyanate using DABCO as catalyst.
Preparation of the two lysinol enantiomers from lysine.
Innovation in Polyurethanes 